US Bridges

County Route 514 over Neshanic River

Fair

Hunterdon County, New Jersey · 2.5 MI NE of JCT US 202 · Structure no. 1000008

Built
1997
28 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
122 ft
2 main spans
Daily traffic
4,484
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 514 over Neshanic River is a prestressed concrete box beam or girders - multiple carrying County Route 514 over Neshanic River in Hunterdon County, New Jersey. It was built in 1997, so it is 28 years old, younger than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,484 vehicles a day, roughly 3% of them trucks, projected to reach 5,471 by 2043. The structure is 122 ft (37.2 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Route 514
CrossesNeshanic River
Location2.5 MI NE of JCT US 202
RouteCounty Highway 514
CountyHunterdon County
StateNew Jersey
Coordinates40.46711, -74.82697
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating67 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length122 ft (37.2 m)
Longest span58 ft (17.7 m)
Deck width36 ft (11.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,484 (2023)
Projected traffic5,471 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Route 514 over Neshanic River built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Route 514 over Neshanic River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does County Route 514 over Neshanic River carry?

About 4,484 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 514 over Neshanic River?

The structure is 122 ft (37.2 m) long with a longest span of 58 ft (17.7 m) and a deck 36 ft wide.

Who owns County Route 514 over Neshanic River?

It is owned by the County Highway Agency.